Metric Size, Aluminum, Split Assembly
Tube Supports

GN 231
RoHS Compliant

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Specification
Tube support:
Black version--Aluminum, powder coated, textured finish
Tumbled version--Aluminum, matte shot-blasted finish
Clamping bores not machined
Cap screws: DIN 912, stainless steel, European Standard No. 1.4301 (American Standard Series 304)
Hex nuts: DIN 985, stainless steel, European Standard No. 1.4301 (American Standard Series 304)

ADJUSTABLE CLAMPING LEVER KITS GN 911 (SOLD SEPARATELY):
These kits can be used to replace the DIN 912 cap screws with adjustable levers. They include lever, spacer bushing, and hex nut, unassembled. See GN 911 to order separately; see right hand column in tables for part numbers of appropriate kit.

 

Information
The clamping bores of GN 231 tube supports are not machined and designed for construction tubings GN 990 or DIN 2391, DIN 2395 and DIN 2462 respectively.
In the standard version, the clamping force of the clamp onto the tube is achieved via the socket cap screws and hex nuts with nylon insert.

Can be used with GN 965 T-Nut Assemblies and 30/40 mm aluminum profile systems. See also Guide to Using GN 965 Assemblies with Various Standard Components. Can also be used with GN 968 T-Nut Assemblies and 30/40/45 mm aluminum profile systems. See also Guide to Using GN 968 Assemblies with Various Standard Components


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Round Bore Type

Dimensions in:

millimeters
(inches)

Part Number
d1
Bore
(B)
d2
k
Clamp-ing Length
d3
Clamping Screw Thread
l1
l2
l3
m1
m2
s2
GN 911
Adj. Clamping Lever Kit
Black Version
Tumbled Version
B8
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
B10
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
B12
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
B14
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
B15
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
B16
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
B18
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
B20
8.5
(.33)
22
(.87)
M8 x 1.25
70
(2.76)
55
(2.17)
4
(.16)
48
(1.89)
16
(.63)
13
(.51)
B25
8.5
(.33)
22
(.87)
M8 x 1.25
70
(2.76)
55
(2.17)
4
(.16)
48
(1.89)
16
(.63)
13
(.51)
B30
8.5
(.33)
22
(.87)
M8 x 1.25
70
(2.76)
55
(2.17)
4
(.16)
48
(1.89)
16
(.63)
13
(.51)
B40
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
B42
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
B45
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
B48
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
B50
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
B55
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
90
(3.54)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
B60
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
90
(3.54)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
Square Bore Type

Dimensions in:

millimeters
(inches)

Part Number
s1
Square
(V)
d2
k
Clamp-ing Length
d3
Clamping Screw Thread
l1
l2
l3
m1
m2
s2
GN 911
Adj. Clamping Lever Kit
Black Version
Tumbled Version
V8
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
V10
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
V12
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
V14
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
V15
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
V16
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
V18
6.2
(.24)
17
(.67)
M6 x 1.0
52
(2.05)
38
(2.50)
3.5
(.14)
36
(1.42)
10.5
(.41)
10
(.39)
V20
8.5
(.33)
22
(.87)
M8 x 1.25
70
(2.76)
55
(2.17)
4
(.16)
48
(1.89)
16
(.63)
13
(.51)
V25
8.5
(.33)
22
(.87)
M8 x 1.25
70
(2.76)
55
(2.17)
4
(.16)
48
(1.89)
16
(.63)
13
(.51)
V30
8.5
(.33)
22
(.87)
M8 x 1.25
70
(2.76)
55
(2.17)
4
(.16)
48
(1.89)
16
(.63)
13
(.51)
V40
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
V45
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
V50
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
80
(3.15)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
V55
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
90
(3.54)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)
V60
11
(.43)
27
(1.06)
M10 x 1.5
100
(3.94)
90
(3.54)
5
(.20)
73
(2.87)
30
(1.18)
17
(.67)